Definition of leather-hard in English:

leather-hard

adjective

  • (of unfired pottery) dried and hardened enough to be trimmed or decorated with slip but not hard enough to be fired.

    • ‘The composite profile from the extrusion has an area of leather-hard rubber and an area of soft rubber.’

Pronunciation:

leather-hard

/ˈleT͟Hərˌhärd/